eMachines EL1321-02c graphics card upgrade

Monitor & Video Cards

I own an eMachines EL1321-02c and its current specification is as followed:
Winfows 7 Home Premium - English/French
AMD Athlon II X2 Dual-Core Processor 215 (2.7Ghz, 512K x 2 L2 cache)
20" LCD
640GB hard drive
3GB DDR2 SDRAM
Super-Multi drive, NVIDIA GeForce 6150SE
I am willing to upgrade the graphic card for gaming, is there anyone who can suggest me a couple of them so that I can make my final choice from the same, Thanks in advance.

If there is no much difference between eMachines ET133140e and your eMachines EL1321-02c then it might be having a 220 watt psu. If it so then you will have to upgrade the psu as well while updating the video card. You can go through the below card and check out the cards and the psu that has been mentioned for eMachines ET133140e if it is similar to eMachines EL1321-02c.Graphics card for eMachines ET133140e

I have tried finding out detail regarding the specification of eMachines EL1321-02c but have not got any luck. Anyways I wanted to add that if it can handle 1 gb video card then you have below better choices:

If you are planning to upgrade to 1 gb video card then I will like to inform you that you will have to get 450 watt psu for the same. In that case Corsair CMPSU-450VX 450-Watt will be the best choice. It is Compatible with the ATX12V v2.2 standard and is capable of providing maximum power stability for 1 gb and higher graphics card as well. It delivers reliable output for high-end computers as well. You can get it from new egg but you will have to check out for its availability.

Even I am having eMachine EL1321-02c and I have recently installed ATI sapphire Radeon HD 4650 512MB low profile in it. If you want then you can update to 1 GB card but if you are willing to get a 512MB low profile card then ATI sapphire Radeon HD 4650 will be the best choice: